It turns out, trying to demonstrate that canis lupus familiaris are smarter than other similar animals winds up proving the null hypothesis instead:

If you are convinced your dog is a genius, you may be disappointed in the conclusions of a study just published in the journal Learning and Behavior.The study finds that dogs are cognitively quite ordinary when compared to other carnivores, domestic animals, and social hunters. “There is no current case for canine exceptionalism,” the authors conclude.

Nevertheless, systematically reviewing the animal cognition literature, British psychologists Stephen Lea and Britta Osthaus found dogs to be unremarkable in their cognitive capabilities compared to wolves, cats, dolphins, chimpanzees, pigeons, and several other species. For example, dogs seem no better at learning associations—such as between a behavior and a reward—than other species. Similarly, dogs can spatially navigate within small spaces, but other species can, too. And while dogs have an excellent sense of smell, the “pig’s olfactory abilities are outstanding and might even be better than the dog’s.”

On the other paw, having dogs appears linked to longer and healthier lives for dog owners. Take that, Wilbur!